function submitForm(formName)
{
    if (checkEmail(document.forms[formName].email.value))
	{
	    document.forms[formName].submit() ;
	}
	else
	{
	    start_clignotte('email');
	}
}

function checkEmail(email)
{
    if (!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email)))
	{
		return false;
	}

	return true;
}

// Ajouté par Andrei

var couleurOff='white';
var couleurOn='red';
var champOn = 0;

function changeColor(couleur, champ)
{
    document.getElementById(champ).style.background=couleur;
}

var blink_timer;
var text_visible = 1;
var text_tmp;
var nbr_max_clignotte = 3;
var nbr_clignotte=1;

function clignotte(champ)
{
    if (champOn)
    {
        nbr_clignotte++;
        champOn=0;
        changeColor(couleurOff, champ);
        if (nbr_clignotte>nbr_max_clignotte)
        {
            clearInterval(clignotte_timer);
        }
    }
    else
    {
        champOn=1;
        changeColor(couleurOn, champ);
    }
}

function start_clignotte(champ)
{
    nbr_clignotte=1;
    clignotte_timer = setInterval('clignotte(\'' + champ + '\')', 200);
}

function blink()
{
    if (text_visible)
    {
        text_tmp = document.email_catcher.email.value;
        document.email_catcher.email.value = '';
        text_visible = 0;
    }
    else
    {
        document.email_catcher.email.value = text_tmp;
        text_visible = 1;
    }
}

function start_blink()
{
    if (document.email_catcher.email.value=='entre ton e-mail')
    {
        blink_timer = setInterval('blink()', 500);
    }
}

function stop_blink()
{
    if (blink_timer)
    {
        clearInterval(blink_timer);
    }
}

function email_focus(this_form, blink)
{
    if (blink == 1)
    {
        stop_blink();
    }
    e = this_form.email;
    if (e.value == 'entre ton e-mail')
    {
        e.value = '';
    }
}

function email_blur(this_form, blink)
{
    var e = this_form.email;
    if (e.value == 'entre ton e-mail' || e.value == '')
    {
        e.value = 'entre ton e-mail';
        if (blink == 1)
        {
            start_blink();
        }
    }
}